In 2000,87% of the wild rat populations in Stadtlohn,Germany was resistant to the poison bromadiolone.This indicates that ____was/were commonly used as a rat poison(s)here,and the rat's resistance is an example of ____ selection.
A)warfarin; directional
B)bromadiolone; directional
C)both warfarin and bromadiolone; disruptive
D)neither warfarin nor bromadiolone; stabilizing
E)bromadiolone; disruptive

Question

Quizplus · Accepted Answer

The fact that 87% of the wild rat population was resistant specifically to bromadiolone indicates that this particular poison was commonly used. Additionally, the resistance shows directional selection, in which the trait that confers resistance becomes more common in the population over time.

In 2000,87% of the Wild Rat Populations in Stadtlohn,Germany Was